Monthly climate in Sao Joao de Meriti, Rio de Janeiro, Brazil

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Sao Joao de Meriti features a tropical savanna climate (Aw). Temperatures typically range between 20 °C (68 °F) and 27 °C (81 °F) through the year, but rarely can drop to 9 °C (49 °F) or can rise to as high as 39 °C (102 °F). The average annual precipitation amounts to about 1592 mm (62.7 inches) and receives 170 rainy days on the 1 mm (0.04 inches) threshold annually. Sao Joao de Meriti enjoys an average of 3445 hours of sunshine throughout the year, and daylight varies from 10 hours 44 minutes to 13 hours 29 minutes per day.

Monthly average temperatures in Sao Joao de Meriti, Rio de Janeiro, Brazil §

The warmest months in Sao Joao de Meriti are January, February and March, with daily mean temperatures ranging from 26 to 27 °C (79 - 81 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 20 to 21 °C (68 - 71 °F) throughout the day. On average each year, Sao Joao de Meriti experiences 260 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Sao Joao de Meriti, Rio de Janeiro, Brazil. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 37°C
(99°F)
37°C
(99°F)
36°C
(97°F)
36°C
(97°F)
34°C
(93°F)
33°C
(92°F)
33°C
(92°F)
34°C
(94°F)
38°C
(100°F)
39°C
(102°F)
38°C
(100°F)
36°C
(97°F)
Mean maximum 37°C
(98°F)
36°C
(96°F)
35°C
(95°F)
34°C
(93°F)
32°C
(90°F)
31°C
(88°F)
32°C
(89°F)
34°C
(93°F)
36°C
(97°F)
36°C
(97°F)
35°C
(96°F)
35°C
(95°F)
Average high 32°C
(90°F)
31°C
(87°F)
31°C
(88°F)
28°C
(83°F)
27°C
(80°F)
26°C
(80°F)
26°C
(79°F)
25°C
(78°F)
28°C
(83°F)
28°C
(83°F)
28°C
(82°F)
30°C
(85°F)
Daily mean 27°C
(81°F)
26°C
(79°F)
26°C
(79°F)
24°C
(75°F)
22°C
(71°F)
21°C
(71°F)
20°C
(68°F)
20°C
(69°F)
23°C
(74°F)
24°C
(75°F)
24°C
(75°F)
25°C
(78°F)
Average low 23°C
(74°F)
23°C
(73°F)
22°C
(72°F)
20°C
(69°F)
18°C
(65°F)
18°C
(64°F)
16°C
(60°F)
16°C
(62°F)
19°C
(66°F)
20°C
(69°F)
20°C
(69°F)
22°C
(72°F)
Mean minimum 21°C
(70°F)
20°C
(69°F)
20°C
(67°F)
17°C
(63°F)
14°C
(57°F)
15°C
(59°F)
12°C
(54°F)
12°C
(54°F)
15°C
(59°F)
17°C
(62°F)
16°C
(62°F)
18°C
(65°F)
Minimum 19°C
(66°F)
19°C
(67°F)
17°C
(63°F)
16°C
(60°F)
11°C
(52°F)
12°C
(55°F)
9°C
(49°F)
10°C
(50°F)
13°C
(56°F)
15°C
(60°F)
14°C
(58°F)
16°C
(61°F)

Compare climate in Sao Joao de Meriti with other places

Compare temperature, precipitation, sunshine, UV index in Sao Joao de Meriti, Rio de Janeiro, Brazil with other places around the world.

Monthly average precipitation in Sao Joao de Meriti, Rio de Janeiro, Brazil §

Sao Joao de Meriti usually has the most precipitation in February, November and December, with an average of 20 rainy days and 229 mm (9.0 inches) of precipitation per month. The driest months in Sao Joao de Meriti are June, July and September. On average, 49 mm (1.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sao Joao de Meriti, Rio de Janeiro, Brazil. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 179 (7.1) 242 (9.5) 207 (8.1) 103 (4.0) 71 (2.8) 45 (1.8) 35 (1.4) 69 (2.7) 67 (2.6) 129 (5.1) 210 (8.3) 234 (9.2)
Average precipitation days (≥ 1 mm) 17 20 20 13 10 8 6 10 9 17 18 22

Monthly sunshine hours in Sao Joao de Meriti, Rio de Janeiro, Brazil §

The sunniest months in Sao Joao de Meriti are March, April and December, when the sun shines an average of 10 hours 2 minutes a day. Least sunny months in Sao Joao de Meriti: January, February and August receive an average of 8 hours 58 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sao Joao de Meriti, Rio de Janeiro, Brazil. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 270 271 309 295 282 275 289 274 293 280 284 318
Mean daily daylight hours 13h 20m 12h 49m 12h 11m 11h 31m 10h 59m 10h 44m 10h 52m 11h 20m 11h 57m 12h 37m 13h 12m 13h 29m

Solar UV radiation in Sao Joao de Meriti, Rio de Janeiro, Brazil §

Sao Joao de Meriti experiences the highest level of ultraviolet (UV) radiation in January, February and December, when the maximum UV index can reach values of 14 - 15, which corresponds to the Extreme category of sun exposure. May, June and July are in the High exposure category. In these months, the maximum values of the UV index do not exceed 7. For more detailed information, check out our hourly Sao Joao de Meriti UV Index data.

Average daily maximum UV levels by month for Sao Joao de Meriti, Rio de Janeiro, Brazil. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 15 14 13 10 7 6 7 9 11 12 13 15

Detailed Monthly Weather Insights for Sao Joao de Meriti, Rio de Janeiro, Brazil

Discover in-depth weather details for every month in Sao Joao de Meriti. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Sao Joao de Meriti's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.